ZL1HD — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ZL1HD, decoded by SO8OO in southeastern Poland. 5 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-07.
These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.
SO8OO decoded 5 FT8 messages attributed to ZL1HD as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -21 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 5 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -21 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 0.
WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with ZL1HD in decoded directed-looking exchanges:
Most frequent locator attributed to ZL1HD
The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.
- Attributed locator
- RF82 · 5 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 17,608 km (approx.)
- Last such locator decoded
- 2026-09-07 05:24 UTC
A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.
Observed FT8 exchanges
S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.
| Time UTC | Band | ZL1HD S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-15 05:44 | 60m | - / -13 | YT2ZE | -8 / - | 4 | ✓ Closing fragment |
| 10-14 06:45 | 60m | - / -20 | F8BON | -20 / - | 3 | ✓ Closing fragment |
| 10-14 06:10 | 60m | - / -10 | 9A2EU | -9 / - | 3 | ✓ Closing fragment |
| 10-14 06:10 | 60m | - / - | OZ8ABA | -1 / - | 3 | Partial capture |
| 10-14 06:10 | 60m | - / - | IZ2DVI | +11 / - | 2 | Partial capture |
| 10-14 06:09 | 60m | - / -21 | G4IRN | 0 / - | 2 | ✓ Closing fragment |
| 10-14 06:02 | 60m | - / - | F8NHF | +1 / - | 4 | Partial capture |
| 10-14 06:02 | 60m | - / - | OZ8ABA | +5 / - | 6 | Partial capture |
| 10-14 06:02 | 60m | - / -16 | IK8WEJ | -17 / - | 5 | Partial capture |
| 10-14 06:01 | 60m | - / -16 | EA3CUU | -13 / - | 7 | ✓ Closing fragment |
| 10-14 06:00 | 60m | - / -16 | OE5RLM | +16 / - | 6 | ✓ Closing fragment |
| 10-14 05:59 | 60m | - / -22 | E70T | +1 / - | 8 | Partial capture |
| 10-14 05:56 | 60m | - / -22 | OZ8ABA | +2 / - | 6 | Partial capture |
| 10-02 06:04 | 60m | - / -13 | F5GN | -15 / - | 3 | ✓ Closing fragment |
| 10-02 06:03 | 60m | - / -14 | LA7DFA | -5 / - | 4 | ✓ Closing fragment |
| 10-02 06:00 | 60m | - / -24 | G3SHK | -5 / - | 5 | ✓ Closing fragment |
| 10-02 05:53 | 60m | - / -15 | LA9GX | -16 / - | 4 | ✓ Closing fragment |
| 10-02 05:53 | 60m | - / -19 | DG0OBU | +15 / - | 6 | Partial capture |
| 10-02 05:53 | 60m | - / - | IW4EGP | 0 / - | 3 | Partial capture |
| 10-02 05:53 | 60m | - / -17 | S57MPU | +6 / - | 8 | ✓ Closing fragment |
| 10-02 05:52 | 60m | - / -19 | IK4CBO | -10 / - | 5 | ✓ Closing fragment |
| 10-02 05:52 | 60m | - / -22 | PA4PA | 0 / - | 2 | ✓ Closing fragment |
| 10-01 05:50 | 60m | - / -14 | EA3A | -9 / - | 4 | ✓ Closing fragment |
| 09-21 06:09 | 60m | - / -21 | G3SHK | -6 / - | 4 | ✓ Closing fragment |
| 09-21 05:46 | 60m | - / -14 | EA3AKY | -12 / - | 2 | ✓ Closing fragment |
| 09-21 05:43 | 60m | - / -14 | OK1FAV | +4 / - | 4 | ✓ Closing fragment |
| 09-21 05:40 | 60m | - / -19 | F1PBZ | -10 / - | 3 | Partial capture |
| 09-21 05:30 | 60m | - / -18 | F/PA2JWN | -8 / - | 3 | ✓ Closing fragment |
| 09-21 05:29 | 60m | - / -15 | DL3VZL | +9 / - | 5 | ✓ Closing fragment |
| 09-21 05:24 | 60m | - / - | EB5AFK | -9 / - | 2 | Partial capture |
| 09-21 05:20 | 60m | - / - | HA5LB | -14 / - | 5 | Partial capture |
| 09-21 05:16 | 60m | - / +7 | US2YW | +14 / - | 3 | ✓ Closing fragment |
| 09-21 05:04 | 60m | - / -15 | DG1CMZ | +7 / - | 2 | ✓ Closing fragment |
| 09-21 04:59 | 60m | - / -17 | HA7TM | +16 / - | 2 | ✓ Closing fragment |
| 09-19 05:01 | 60m | - / -10 | EA1FCH | -1 / - | 3 | ✓ Closing fragment |
| 09-17 05:19 | 60m | - / - | IK4CBO | -14 / - | 2 | Partial capture |
| 09-14 06:08 | 60m | - / - | HB9DBM | -18 / - | 6 | Partial capture |
| 09-14 06:05 | 60m | - / -16 | F/PA2S | -2 / - | 7 | Partial capture |
| 09-14 06:05 | 60m | - / - | F4FRC | -18 / - | 4 | Partial capture |
| 09-14 06:03 | 60m | - / -21 | HB9ACA | -18 / - | 6 | ✓ Closing fragment |
| 09-12 06:11 | 60m | - / - | G3SHK | -8 / - | 2 | Partial capture |
| 09-12 06:03 | 60m | - / - | G3SHK | -8 / - | 3 | Partial capture |
| 09-12 06:02 | 60m | - / -18 | EA3DIX | -19 / - | 3 | ✓ Closing fragment |
| 09-11 06:10 | 60m | - / - | LA4GHA | -12 / - | 2 | Partial capture |
| 09-11 05:50 | 60m | - / - | F5LSU | -12 / - | 2 | Partial capture |
| 09-11 05:50 | 60m | - / -16 | LA1TV | -15 / - | 3 | ✓ Closing fragment |
| 09-11 05:43 | 60m | - / -14 | LB8MG | -12 / - | 7 | ✓ Closing fragment |
| 09-11 05:26 | 60m | - / -14 | PA2S | -6 / - | 3 | ✓ Closing fragment |
| 09-11 05:25 | 60m | - / -15 | LB8MG | -2 / - | 28 | Partial capture |
| 09-10 07:21 | 40m | - / -19 | GU0SUP | -2 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 061015 -3 789 ZL1HD G4IRN 73 061030 -5 2551 ZL1HD OZ8ABA JO55 061045 +11 2649 ZL1HD IZ2DVI JN45 061045 -8 948 ZL1HD 9A2EU -10 061100 +1 2551 ZL1HD OZ8ABA JO55 061115 -10 949 ZL1HD 9A2EU -10 061130 +1 2551 ZL1HD OZ8ABA JO55 061145 -9 949 ZL1HD 9A2EU RR73 064530 -24 1535 ZL1HD F8BON R-20 (x3) 054400 -6 1879 ZL1HD YT2ZE -13 (x4)
UTC dB Audio Message 065630 -10 2740 ZL1HD F4FQY -08 065700 -11 1960 ZL1HD ON5JV JO20 (x6) 065930 -1 1327 ZL1HD HB9RLZ R-10 (x6) 072100 -5 2889 ZL1HD GU0SUP -19 (x2)
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